First of all, you did a real good job with this map. I really like the Ambience and all the details in there. >ou also included an Overview and Customtextures! The 3DSkybox gives it a very realistic look. You tried to do inside and outside areas and hit the theme pretty perfectly.
Only thing I didn't really like was the white light in one of the doors, it feels like somethings is missing there. Some of the models also could be brighter, because they are nearly black.
The balance is nearly perfect, also because of the halfway symetrical layout.
Overall i can really recommend this map. It's great.